Aubrey gave away 13 of her baseball cards. if she now has 91 cards, how many cards did she start with? let c = the nunber of cards she started with.

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Runner ran 1 4/5 miles on monday and 6 3/10 on tuesday. how many times her monday’s distance was her tuesdays distance

How to simply and write the answer n a whole number